Astructure that specifies which of a number of permitted data types (e. g. integers) that may be stored in its instances is: a. an array b. a linked list c. a bitmap d. a union

A union is a data type that allows you to define that different data types take up the same space (e.g., an int and a float).

Usually this is not a very safe way of programming, but there can be specific reasons to do it.

- edit: I deliberately give the definition of a union here, because the question can be interpreted in multiple ways. So I see how you could interpret the question as the definition of a linked list as well.

answer; i believe the correct answer is (a) all trenches must have access/egress;

browsing like internet search? don't look at anything stupid. or set up restrictions on ur device's search engine. and if something suspicious comes up don't be dumb and click on it. i hope that's what ur question meant.